Create the Wireless Receiver Delayer

Also added the message in /wri that says if the receiver is a delayer
and what is the delay.
Correctly added the delayer in the config.
Also added the command /wrr <channel> delayer
Starting update to 1.6.2

Updated dependance to bukkit. Now i have to stop using the deprecated
setTypeIdAndData() method, and start using the full api of bukkit.

Before releasing this version I'll first fix all the new bugs that i
caught.